hate to break it to you, but your GAT is not a tank. it's an assault gun. remember, a tank must have a) an enclosed cockpit without large windows b) 360 degree rotating main turret and c) treads (somewhat optional and forgivable in most cases).

regardless, i am in love with your consistent building style. even the two mechs that are different LOOK like they were made off the same basic framework, and that's awesome. your helicopter also has a really nice shape to it.